EP 2447944 A3 20131106 - Technique for suppressing particular audio component
Title (en)
Technique for suppressing particular audio component
Title (de)
Technik zur Unterdrückung von bestimmten Audiokomponenten
Title (fr)
Technique pour supprimer un composant audio donné
Publication
Application
Priority
- JP 2010242244 A 20101028
- JP 2011045974 A 20110303
Abstract (en)
[origin: EP2447944A2] A coefficient train processing section (33), which sequentially generates per unit segment (Tu) a processing coefficient train (G(t)) for suppressing a target component of an audio signal (x), includes a basic coefficient train generation section (42) and coefficient train processing section (44). The basic coefficient train generation section (42) generates a basic coefficient train where basic coefficient values corresponding to frequencies within a particular frequency band range (B0) are each set at a suppression value ( ³ 0) that suppresses the audio signal while coefficient values corresponding to frequencies outside the particular frequency band range are each set at a pass value ( ³ 1) that maintains the audio signal. The coefficient train processing section (44) generates the processing coefficient train, per unit segment, by changing, to the pass value ( ³ 1), each of the coefficient values corresponding to frequencies other than the target component among the coefficient values corresponding to the frequencies within the particular frequency band range (B0).
IPC 8 full level
G10H 1/36 (2006.01); G10L 21/02 (2006.01); G10L 21/0272 (2013.01); G10L 21/028 (2013.01); G10L 21/0332 (2013.01)
CPC (source: EP US)
G10H 1/361 (2013.01 - EP US); G10L 21/0208 (2013.01 - EP US); G10L 21/0272 (2013.01 - EP US); H04S 7/30 (2013.01 - EP US); G10H 2210/066 (2013.01 - EP US); G10H 2210/331 (2013.01 - EP US); G10H 2250/021 (2013.01 - EP US); G10H 2250/031 (2013.01 - EP US); G10L 25/90 (2013.01 - EP US); G10L 2021/02087 (2013.01 - EP US); H04S 7/40 (2013.01 - EP US); H04S 2400/11 (2013.01 - EP US); H04S 2420/07 (2013.01 - EP US)
Citation (search report)
- [A] EP 1640973 A2 20060329 - SONY CORP [JP]
- [A] US 2007147623 A1 20070628 - KIM SEOUNG-HUN [KR], et al
- [A] WO 2008122974 A1 20081016 - TECHNION RES & DEV FOUNDATION [IL], et al
- [AD] M. VINYES, J. BONADA, A. LOSCOS: "Demixing Commercial Music Productions via Human-Assisted Time-Frequency Masking", AUDIO ENGINEERING SOCIETY 120TH CONVENTION, FRANCE, 20 May 2006 (2006-05-20) - 23 May 2006 (2006-05-23), XP040507613
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2447944 A2 20120502; EP 2447944 A3 20131106; EP 2447944 B1 20141217; JP 2012109924 A 20120607; JP 6035702 B2 20161130; US 2012106758 A1 20120503; US 9070370 B2 20150630
DOCDB simple family (application)
EP 11186824 A 20111027; JP 2011045974 A 20110303; US 201113284199 A 20111028